Some wheels use sensors that are made as a part of the valve stem. If removed from the wheel, the entire sensor/valve stem will have to be replaced with new ones. Ford also uses a sensor that is mounted to a band that circles the inside of the wheel. Those can be removed and replaced with no problems. I have two Mustangs, a 2005 V6 Convertible and a 2006 GT, and both have the valve stem sensors. However a friend has a 2006 with optional Ford wheels and they have the band style sensors. Either way, if you damage one, its going to run $100 to $ 200 each for replacement.
My daily driver, a Focus, has the bands. About a year ago the low tire warning light came on but the in dash info center said it was a sensor error. I took it to the dealer and it was determined that one sensor had failed and two were weak. They wanted almost $800 to replace the sensors. I ended up going to a Firestone tire dealer and had them replaced for $420. Which ever ones you have be careful.